@article{10_1007_s10587_013_0068_3,
     author = {Os\k{e}kowski, Adam},
     title = {A sharp maximal inequality for continuous martingales and their differential subordinates},
     journal = {Czechoslovak Mathematical Journal},
     pages = {1001--1018},
     publisher = {mathdoc},
     volume = {63},
     number = {4},
     year = {2013},
     doi = {10.1007/s10587-013-0068-3},
     mrnumber = {3165511},
     zbl = {06373958},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.1007/s10587-013-0068-3/}
}